I have a program written to scrape the source code from a webpage after a button is clicked. I am unable to scrape the right page because I believe an AJAX request is being sent, and I am not waiting for this response to take place. My code is currently:
public class Htmlunitscraper {
private static String s = "http://cpdocket.cp.cuyahogacounty.us/SheriffSearch/results.aspx?q=searchType%3dSaleDate%26searchString%3d10%2f21%2f2013%26foreclosureType%3d%27NONT%27%2c+%27PAR%27%2c+%27COMM%27%2c+%27TXLN%27";
public static String scrapeWebsite() throws IOException {
java.util.logging.Logger.getLogger("com.gargoylesoftware").setLevel(Level.OFF);
System.setProperty("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.NoOpLog");
final WebClient webClient = new WebClient();
final HtmlPage page = webClient.getPage(s);
final HtmlForm form = page.getForms().get(2);
final HtmlSubmitInput button = form.getInputByValue(">");
final HtmlPage page2 = button.click();
String originalHtml = page2.refresh().getWebResponse().getContentAsString();
return originalHtml;
}
}
After referring to this link, I believe to fix this I could implement the method "webClient.waitForBackgroundJavaScript(10000)". The only issue is I do not understand how to do this because each time I click the button I create a HtmlPage object, not a WebClient object. How could I incorporate this method to fix the problem?
For me it helped to use htmlunit 2.15 with NicelyResynchronizingAjaxController, and also
webClient.getOptions().setThrowExceptionOnScriptError(false);
My full setup is
WebClient webClient = new WebClient(BrowserVersion.FIREFOX_24);
webClient.getOptions().setJavaScriptEnabled(true);
webClient.getOptions().setThrowExceptionOnScriptError(false);
webClient.getOptions().setCssEnabled(false);
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
I would try the solution of setting
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
this would cause all ajax calls to be synchronous.
Alternatively, did you try in your solution to call to "webClient.waitForBackgroundJavaScript(10000)" after tou got the page?
Something like this:
final HtmlPage page2 = button.click();
webClient.waitForBackgroundJavaScript(10000)
String originalHtml = page2.asXml();
return originalHtml;
Please use also htmlunit 2.13
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